[niedbalski] fixup unit tests for key management

hooks/nova_cc_utils.py

@@ -627,7 +627,10 @@ def ssh_compute_remove(public_key, user=None):
     [keys.remove(key) for key in keys if key == public_key]
 
     with open(authorized_keys(user), 'w') as _keys:
-        _keys.write('\n'.join(keys) + '\n')
+        keys = '\n'.join(keys)
+        if not keys.endswith('\n'):
+            keys += '\n'
+        _keys.write(keys)
 
 
 def determine_endpoints(url):

unit_tests/test_nova_cc_utils.py

@@ -405,7 +405,7 @@ class NovaCCUtilsTests(CharmTestCase):
             "\nssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC27Us7lSjCpa7bumXAgc "
             "nova-compute-1\n"
             "ssh-rsa CCCCB3NzaC1yc2ECCCCDCQCBCCCBCQC27Us7lSjCpa7bumXCgc "
-            "nova-compute-3\n\n"
+            "nova-compute-3\n"
         )
         isfile.return_value = True
         self.remote_unit.return_value = 'nova-compute/2'